BREAK mod pic2
BREAK mod pic3
More photos (full motherboard, power, etc.)
NEXT: I should have most of the schematics, or I can pretty easily plot out the circuits for these mods for support purposes. One would have read articles describing these mods, with schematics, from old magazines like 6502 journal or MICRO, Kilobaud, etc.
When I get the chance I will post more info if I discover something useful that is not already out there.